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公开(公告)号：US09809328B2
公开(公告)日：2017-11-07
申请号：US14644425
申请日：2015-03-11
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
CPC classification number: B64G1/365 , B64G1/26 , B64G1/281 , B64G1/283 , B64G1/285 , B64G1/286 , B64G1/288 , B64G1/32 , B64G1/34 , B64G1/36 , B64G1/363 , B64G1/366 , B64G1/407 , B64G2001/245
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
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公开(公告)号：US11999513B2
公开(公告)日：2024-06-04
申请号：US17523656
申请日：2021-11-10
Applicant: Massachusetts Institute of Technology
Inventor： Ezinne Uzo-Okoro , Kerri L. Cahoy
CPC classification number: B64G4/00 , B64G1/10 , B64G1/24 , B25J9/1682 , B25J9/1687 , B64G1/223 , B64G2004/005
Abstract: Described is a spacecraft locker configured be deployed in outer space and configured to assemble satellites (e.g., CubeSats) within it and deploy them in outer space. In an embodiment, an unmanned spacecraft includes a housing configured to be deployed in a microgravity environment, the housing having an access point (e.g. a door), a storage area configured to store parts of a satellite, one or more robots movably positioned in the housing, and a controller configured to control at least one of the one or more robots to access parts from the storage area and to assemble the parts on an assembly platform of the housing. The controller may also control deployment of the assembled satellite through the door of the housing to a position in the microgravity environment.
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公开(公告)号：US10220965B2
公开(公告)日：2019-03-05
申请号：US15725478
申请日：2017-10-05
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
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公开(公告)号：US20180111706A1
公开(公告)日：2018-04-26
申请号：US15725478
申请日：2017-10-05
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
CPC classification number: B64G1/365 , B64G1/26 , B64G1/281 , B64G1/283 , B64G1/285 , B64G1/286 , B64G1/288 , B64G1/32 , B64G1/34 , B64G1/36 , B64G1/363 , B64G1/366 , B64G1/407 , B64G2001/245
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
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